We have two PRTG installations, one inside a LAN and using ISP's SMTP server, and another installation on a live server using built in email notification delivery system. Email notifications from both are automatically marked as phishing emails and moved to the junk folder of the email client (Windows Live Mail).
SMTP settings in the PRTG installations are configured as follows:
Sender E-mail: [email protected] Sender Name: PRTG Network Monitor @ Server Name HELO Ident: servername.companyname.com
A DNS record is added for servername.companyname.com pointing to server IP address (Type: A)
companyname.com is added to safe sender domains list in the security settings of the email client (works with all other senders, but not with emails originating from PRTG) Additionally, [email protected] is also added as safe senders list in the security settings of the email client. Still without change. Emails from PRTG get into junk, marked with big red cross and a warning message as phishing email...
Why?? And what to do about it?